Abstract
3-Isonicotinamido-rhodanine (HINRd) reacts with metal ions to yield complexes of the types M(INRd)OH·nH2O (where M=CoII, NiII, ZnII or CdII and n=1 or 2), Cu(HINRd)X·2H2O (where X=Cl or Br), Pd(HINRd)Cl2 and Cd(HINRd)X2·H2O (where X=Cl or Br), depending on the metal salt used and the reaction conditions. The metal complexes have been characterized by elemental analysis, molar conductivities, molecular weights, magnetic susceptibility, visible, and i.r. studies. The i.r. spectra show that HINRd binds in a bidentate or monodentate manner. The spectral and magnetic studies suggest a tetrahedral arrangement for CoII, octahedral for NiII and square-planar for PdII. HINRd behaves as a reducing agent towards CuII chloride or bromide forming diamagnetic CuI complexes.
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